Abstract
AbstractAqueous polymerization of acrylamide, initiated by the potassium persulfate‐thioglycolic acid redox pair, was studied at 30°C under introgen. The initial rate of polymerization R was found to be approximately proportional to the 0,5th power of potassium persulfate concentration within the range of 0,6 to 1,0 mmol−1. R was also found to vary linearly with the monomer concentration between 0,8 · 10−1 and 1,0·10−1 mol l−1 and to increase with the thioglycolic acid concentration in the interval of 3,0 to 4,0 mmol l−1. The activation energy was estimated to be 126 kJ mol−1. Addition ot NaCl, NaF, and (CH3)4NI lowered the initial rate R while MnSO4 increased it. Some aliphatic alcohols were observed to be polymerization retarders.
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